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55 lines
1.9 KiB
Markdown
55 lines
1.9 KiB
Markdown
# XML Schemas for Assisted GNSS-SDR
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<!-- prettier-ignore-start -->
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[comment]: # (
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SPDX-License-Identifier: GPL-3.0-or-later
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)
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[comment]: # (
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SPDX-FileCopyrightText: 2011-2020 Carles Fernandez-Prades <carles.fernandez@cttc.es>
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)
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<!-- prettier-ignore-end -->
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GNSS-SDR can read assistance data from
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[Extensible Markup Language (XML)](https://www.w3.org/XML/) files for faster
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[Time-To-First-Fix](https://gnss-sdr.org/design-forces/availability/#time-to-first-fix-ttff),
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and can store navigation data decoded from GNSS signals in the same format. This
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folder provides XML Schemas which describe those XML files structure.
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[XSD (XML Schema Definition)](https://www.w3.org/XML/Schema) is a World Wide Web
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Consortium (W3C) recommendation that specifies how to formally describe the
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elements in an XML document.
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## GPS L1 C/A
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- [ephemeris_map.xsd](./ephemeris_map.xsd) - GPS NAV message ephemeris
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parameters.
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- [iono_model.xsd](./iono_model.xsd) - GPS NAV message ionospheric model
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parameters.
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- [utc_model.xsd](./utc_model.xsd) - GPS NAV message UTC model parameters.
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- [gps_almanac_map.xsd](./gps_almanac_map.xsd) - GPS NAV message almanac.
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## GPS L2C and L5
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- [cnav_ephemeris_map.xsd](./cnav_ephemeris_map.xsd) - GPS CNAV message
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ephemeris parameters.
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## Galileo
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- [gal_ephemeris_map.xsd](./gal_ephemeris_map.xsd) - Galileo ephemeris
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parameters.
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- [gal_iono_model.xsd](./gal_iono_model.xsd) - Galileo ionospheric model
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parameters.
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- [gal_utc_model.xsd](./gal_utc_model.xsd) - Galileo UTC model parameters.
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- [gal_almanac_map.xsd](./gal_almanac_map.xsd) - Galileo almanac.
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---
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Please check https://gnss-sdr.org/docs/sp-blocks/global-parameters/ for more
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information about the usage of XML files in GNSS-SDR.
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You could find useful the utility program
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[rinex2assist](https://github.com/gnss-sdr/gnss-sdr/tree/next/src/utils/rinex2assist)
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for the generation of compatible XML files from recent, publicly available RINEX
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navigation data files.
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